noun

• (originally) Any unit of (originally cultural) information, such as a practice or idea, that is transmitted verbally or by repeated action from one mind to another in a comparable way to the transmission of genes.
  "Examples of memes are tunes, ideas, catch-phrases, clothes fashions, ways of making pots or of building arches."
• (Internet) Media, usually humorous, which is copied and circulated online with slight adaptations, such as basic pictures, video templates, etc.
  "He posted a meme that went viral within a few hours on social media."
• (Internet) A specific instance of a meme, such as an image macro or a video, often with humorous superimposed text.
  "This meme generator lets you make your own memes by adding a caption to existing images, or by uploading your own image."
• (Internet slang, derogatory) Something which is deceptive; a trick, a ruse.
  "It's a meme degree, you know. Good luck getting a job from that."

verb

• (intransitive, Internet slang) To create and use humorous memes.
  "One axiom commonly seen on /pol/ is "The Left Can't Meme"; in other words, left-wing meme jokes aren't funny."
• (transitive, Internet slang) To turn into a meme; to use a meme, especially to achieve a goal in real life.
  "Scott Greer, a deputy editor of the Daily Caller, tweeted, “Cernovich memed #SickHillary into reality. Never doubt the power of memes.”"
• (intransitive, Internet slang, by extension) To joke around.
  "actually, it wasn't my mental functioning. i'm just meming."

noun

• (informal, term of endearment) granny; nana
  "When my parents got a divorce my dad washed his hands of my mom and me. He just pretended neither she nor I existed. If it weren't for my Meme, I would have lost all contact with the Atwood family after the divorce."